John McCain is a lock to win Arizona's GOP Senate primary on Tuesday, according to the latest poll. His spokesman pronounced challenger J.D. Hayworth "deader than Elvis," and McCain is celebrating with a positive TV spot about jobs and security. But the campaign's overall tone was more reminiscent of his mudslinging 2008 presidential bid than his magnanimous 2000 run. Perhaps that's just what happens when you change your mind on campaign finance reform.

McCain 2000: "[I]f all you run is negative attack ads, you don't have much of a vision for the future..."